Diodes Incorporated LM2904AM8-13

Overview

LM2904AM8-13 from Diodes Incorporated is a dual operational amplifier in MSOP-8 package, featuring 1 mV typical input offset voltage (A-grade), 500 µA supply current per amplifier, and rail-to-rail input common-mode range including ground. It operates from single 3 V to 36 V or dual ±1.5 V to ±18 V supplies and supports industrial temperature range (−40 °C to +125 °C), commonly used in sensor signal conditioning and power supply feedback loops.

For engineers reviewing the LM2904AM8-13 datasheet, LM2904AM8-13 pinout, LM2904AM8-13 application, or LM2904AM8-13 equivalent, key selection criteria include input offset voltage stability over temperature, output swing capability (0 V to V_CC−1.5 V), low bias current (20 nA), and compatibility with single-supply systems requiring ground-referenced inputs.

Technical Context

The LM2904AM8-13 uses a PNP-input stage enabling true-differential operation with input common-mode voltage down to ground and up to V_CC−1.5 V. Its internal compensation ensures unity-gain stability without external components.

It delivers 100 dB open-loop DC voltage gain, 700 kHz unity-gain bandwidth, and 0.3 V/µs slew rate under ±15 V dual supply. Output stage supports both sourcing and sinking (±20 mA typical), with short-circuit protection limiting damage during transient faults.

Key Specifications

Pinout & Package

LM2904AM8-13 is housed in an 8-pin MSOP package (3.0 mm × 3.0 mm × 0.85 mm height), thermally optimized with θ_JA = 160 °C/W and θ_JC = 20 °C/W, suitable for space-constrained PCB layouts with moderate power dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual op-amp applications.

Compared with LM2904M8-13, the A-grade offers tighter offset for precision DC gain; versus TLV2462IDR, it trades speed and rail-to-rail output for guaranteed ground-referenced input operation and wider supply flexibility.

Availability

LM2904AM8-13 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive cabin monitoring systems, and consumer appliance control circuits requiring stable component supply across extended temperature and voltage ranges.

Supply support for LM2904AM8-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, industry-qualified components for automotive, industrial, and computing markets.

The LM2904 series belongs to Diodes' precision analog amplifier product line, designed specifically for single-supply industrial and automotive applications demanding ground-sensing capability, wide voltage operation, and AEC-Q100-compatible variants.

FAQ

What is the maximum operating junction temperature for LM2904AM8-13?

The absolute maximum junction temperature is +150 °C, with continuous operation rated from −40 °C to +125 °C ambient. Thermal derating begins above +125 °C ambient, and power dissipation must be limited using θ_JA = 160 °C/W to avoid exceeding TJ(max). The MSOP-8 package requires adequate copper pour and thermal vias for sustained 500 µA-per-amp operation at high ambient temperatures.

Does LM2904AM8-13 support dual-supply operation?

Yes - it operates with dual supplies from ±1.5 V to ±18 V, maintaining specified performance including input common-mode range, offset voltage, and output swing. Pin 4 is GND (not V_EE), so negative supply connects to pin 4 only in single-supply mode; for dual supply, pin 4 remains ground reference while V_CC (pin 8) and V_EE (external) form the rails - though the datasheet defines V_EE = 0 V by default, meaning true dual supply requires external negative rail routing to amplifier inputs and outputs.

Can LM2904AM8-13 drive capacitive loads directly?

Capacitive loads up to 50 pF are stable in unity-gain non-inverting configuration; larger loads require isolation via series resistor (≥100 Ω) or increased closed-loop gain to maintain phase margin. Direct connection of >100 pF loads risks peaking or oscillation due to dominant-pole compensation interacting with load capacitance - verified in Figure 13 of DS36780 Rev. 5-2 showing degraded pulse response beyond 50 pF.

Is LM2904AM8-13 pin-compatible with other SO-8 op-amps?

No - its pinout (1:OUT1, 2:IN1−, 3:IN1+, 4:GND, 5:IN2+, 6:IN2−, 7:OUT2, 8:V_CC) differs from industry-standard SO-8 op-amps like LM358 (1:OUT1, 2:IN1−, 3:IN1+, 4:V_EE, 5:IN2+, 6:IN2−, 7:OUT2, 8:V_CC). Substitution requires PCB layout revision; MSOP-8 footprint also differs mechanically from SO-8, preventing drop-in replacement.